Harry ckoss



H. CROSS.

SHOCK ABSORBER.

APPLICATION HLED ocT.2.19x9,

lnentmi Dev. 3U, 191%).

" like numerals are UNITED STATES PATENT OFFICE.

HARRY CROSS, 0F MONTREAL, QUEBE, CANADA.

SHOGK-ABSORCBEB.

To au 'whom 'it may concern:

Be it known that I, HARRY Cnoss, a citizen of the United States,residing at Montrcal, in the Province of Quebec and Dominion 4of"Canada, have invented certain5 new and useful Improvements inShock-Absorbers; and I do declare the vzfollovvingto be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to l'which it appertains to make and use the same.

This invention relates to shock absorbers and it is particularlydesigned to be used in connection with automobiles, 'although it is notto' be restricted to such use.

The primary object of the invention is to provide an improved shockabsorber, having means for controlling the movement Aor vibrations ofthe spring-supported body of. a vehicle relative to the running gear ofthe saine, which does not effect the action of the vehicle springs incompressing, but prevents, as much as possible, the rebound or Wardmovement of the body of the vehicleV u w lich is extremelyuncoi'nfo-rtable to the occupants of the vehicle, and is severe on thesprings, oftentimes causing them to become broken.

Another object of the invention is to provide a device of the abovementioned character which is simple in construction, effective inoperation, strong, durable and inexpensive to manufacture.

Other objects and advantages of the in# vention will be apparent duringthe course of the following description.

In the accompanying drawings formin a part of this speciication'and inwhic employed to designate like parte throughout the same,

Figure 1 1s a side elevation illustratino" the shock absorber to ahicle.

Fig. 2 is a horizontal section on the plane of line 2--2 of Fig. 3.

big. 3 is an enlarged side elevation of the manner of attaching myimproved spring-supported veldevice constructed in accordance with myinvention.v

In the drawings, wherein for the purpose 0f illustration is shown apreferred embodi ment of the invention, Faindicates a portion of the'automobile frame which is carried on the-usual springs S and axle A andSpecification of Letters Patent.

Patented Dec. 30, 1919.

Application lled October 2, 1919. Serial No. 327,877.

with which my improved snoei: absorbing device is associated.

In carrying out my invention I employ a casing or housing 1 Which isprovided with a friction track over which a belt or ,strap 2 is adaptedto slide. One end of the belt 2 is secured to a drum 3 which is mountedfor rotation within the casing 1 and is.

tending outwardly therefrom. A portion of this fiange forms a frictiontrack 9 over which ,the belt 2 slides. Cast integral with drum 3 andextending in the same direction as t-he flange 8 is a centrally disposedsleeve or hub 10 around which the spring 4 is disposed; This hub servesto prevent, as much as possible, wiggling or side motion of the drum aswould otherwise occur.

In orderl to adjust the tension of the spring 4:, I employ springtightening arm 6 which is' carried by a pin 1l loosely fitted in the hub10.*: Although the in 11 may be. of any' other construction preferablymake it cylindrical and extend one end of it beyond the end of thesleeve 10 in which it revolves. The inner end of the spring tighteningarm 6 is provided with a square aperture, as shown which fits over thereduced square end 12 of the pin 11 and per- Y mits the pin to berotated in the sleeve 10 when the member 6 is 'moved in a rotarydirection. The opposite or buter end of the arm 6 is detacha ly securedto the friction flange 7 by means of screws 13. he s ring ,4 has one ofits ends `hooked or anc ored around a pin 14 projecting from the drum 3and the other end is connected to a lateral projection or lug 15 carriedby the pin 11. Hence, it will be seen that when the arm 6 is rotatedfrom left to right Vthe spring will be wound tighter, and it is in thismanner that the tension Vof said spring is adjusted.

The free end of the belt 2, may be anbe resorted to chored in anysuitable manner, such as for instance, by a clamping member or bracket 5of a construction which may be readily attached to and detached Jfromthe axle A of the vehicle.

In order to prevent and uard against the entrance of mud and dirt intothe aforesaid parts, I employ a cover 16 which is attached ni. positionby means of screvvs 17 which it in holes 18 drilled in the casing 1.

The Whole device is secured to the frame F by means of bolts 19 whichpass through the openings 20 in the cover 15 and casing 1 as shown.

I'Vhen the car encounters an uneven place in the road the spring A. andframe will be brought closer together. When this 0ccurs, the belt 2Willbecoine slack and by the action of the coiled spring 4 on the drum 3the belt `will be caused to wind thereon. 0n the immediate rebound orseparation of the spring from the traine, the belt Will'be placed undertension and a braking action exerted thereon, thereby preventing a quickor sudden rebound of the vehicle body.0 In other words, When the springS and frame F separate the belt 2 is drawn over the friction track 9 andis also subjected to the action of the spring 4, thus resulting inretarding the movement of the belt and preventing the u ward throw ofthe vehicle body which is ob]ectionable to the occupants of the car andoftentimes injuriousto the springs. It is not intended however` thatthis device interfere in any way with the compressing of the vehiclespring. it being only prevent, as much as possible, the rebound of thevehicle body.

It is to be understood that the form of my invention herein shown anddescribed is to be taken as a preferred embodiment of the same, and thatvarious changes in the shape,isize and arrangement of parts may withoutdeparting from the spirit of the invention or the scope of the snbioinedclaims. i 1

Havingthus described j my invention, what I claim is 1. In a shookabsorber. :Leasing includr ing a friction track, a sleeve in saidcasing, a drum in said casing, a coiled spring desired to p 4surrounding said sleeve, a pin loosely mounted in said sleeve, said pinhaving one of its ends projecting beyond said sleeve, a sprin tighteningarm carried by said cx-A tende portion of the pin, the outer end of saidarm being detachably secured to the friction track, one end of saidspring being anchored to the drum and the other end to the pin, wherebywhen the spring tightening arm is rotated the tension of the spriner isadjusted, a belt secured to said drum, sai

belt being adapted to slide over the friction track, and means foranchoring the other` end of said belt to the vehicle.

2. In a shock absorber, a casing including a friction track, a hub insaid casing, a drum in said casing, a pin in said hub, a coiled springsurrounding said hub, an arm extending laterally from said pin andanchored in said casing, a belt secured at one of its ends to said drum,the opposite end thereof extending over the friction track i'n 'thecasing, and means for anchoring the free end of tlie belt to an axle,substantially as set forth.

3. In a. shock absorber, a semi-oval shaped casin including a platehaving a flange exten ing outwardly therefrom, a portion of said flangeserving as a friction track, a drum having aV centrally disposed hubcast integral therewith, a spring anchor ing pin in said drum adjacentthe hub, a pin loosely mounted in said hub and extending beyond one endthereof. the extremity of said pin being reduced, a lug on the extendedportion of said in. a coiled spring sui'- i'ounding said hu and pin, oneend of said spring being secured to saidA anchoring pin in the drum, theopposite end being fastened to the lug on said pin, a spring tighteningarm secured to the reduced extremity of said pin, the opposite end ofsaid arm bein'g'detachably secured to said friction track, a belt havingone of its ends .secured to said drum, the opposite end being slidableover said friction track. and means to anchor the' free end of said beltto a part of ,a vehicle.

In testimonir whereof I have hereunto set my hand.

HARRY CROSS.

